Duke Energy Rates
Pending Duke Energy Indiana cases of note include its:
- Pending fuel cost adjustment (IURC Cause No. 38708 FAC 138)
- Proposed Federal Mandate Recovery Plan (IURC Cause No. 45940)
- Proposed solar purchase agreement (IURC Cause No. 45907)
- Trackers approved under its approved 6-year infrastructure plan (IURC Cause No. 45647)
- Three-year energy efficiency plan (IURC Cause No. 45803)
In the most recent IURC survey of residential electric bills, Duke Energy's average bill ranked sixth-highest among the electric utilities the IURC regulates.
Base rates cover most infrastructure and operating/maintenance costs while rate adjustment “trackers,” as described below, allow for more frequent rate changes for specific costs as designated by law. The trackers were re-set when Duke Energy's current base rates were approved in June 2020 and are still subject to adjustments every three, six, or 12 months.
Current base rates for Duke Energy Indiana received IURC approval in June 2020 (Cause No. 45253). Prior to the case, base rates made up about 60% of a typical Duke Energy residential bill. As of September 2023, base rates comprise approximately 99.7% of a monthly residential bill for 1,000 kWh.
The utility's previous base rates were approved in 2004.
In addition to base rates, Indiana electric utilities recover and credit separate, specific costs through rate adjustment mechanisms known as "trackers." Rate adjustments via trackers are reviewed by the OUCC and approved by the IURC on a quarterly, semi-annual or annual basis.
Duke Energy's authorized trackers make up about 0.3% of a residential customer's typical electric bill as of September 2023.
Duke Energy is authorized to use the following trackers. All filings are available by entering the cause number in the IURC's Online Services Portal.
Tracker Recovers Costs for Frequency IURC Cause No. Fuel Adjustment Clause (FAC) Coal and other fuels Quarterly 38707 Environmental Compliance Adjustment (ECA) Federally mandated compliance costs including emissions control equipment Semi- Annual 42061 Transmission, Distribution, & Storage System Charge (TDSIC) Projects in 7-year infrastructure plan Semi-Annual 44720 Demand Side Management (DSM) Energy efficiency programs Annual 43955 Summer Reliability Adjustment (SRA) Capacity resources needed for system reliability Annual 44348 Regional Transmission Operator (RTO) Participation in Midwest Independent Transmission System Operator (MISO) Quarterly 42736 Federally Mandated Cost Adjustment (FMCA) Critical Infrastructure Protection Semi-Annual 44367 Renewable Energy Project Rider Renewable Energy Projects Annual 44932
Additional Cases of Note
Previous Duke Energy cases before the IURC include:
- Current fuel cost adjustment (Cause No. 38707-FAC137)
- Coal ash compliance project (Cause No. 45749)
- Financing request (Cause No. 45766)
- Most recent fuel cost adjustment (Cause No. 38707-FAC135)
- Utility Receipts Tax reduction (Cause No. TD-50550)
- Proposed distributed generation tariff (Cause No. 45508)
- 2017 Tax Cuts & Jobs Act investigation (Cause No. 45032)
- Advanced metering opt-out tariff (Cause No. 44963)
- COVID-19 investigation (Cause No. 45380)
- Coal Combustion Residuals rule compliance projects (Cause No. 44765)
- Electric vehicle pilot program - 2019/2020 case (Cause No. 45253-S2)
- Electric vehicle proposal - 2021/2022 case (IURC Cause No. 45616)
- Edwardsport integrated gasification combined cycle (IGCC) power plant (Cause No. 43114)
- Energy efficiency plans (Cause No. 43955)
The seven percent state sales tax applies to all Indiana electric utilities.